Ubuntu mainline kernel builds now failing not able to find module.lds file

[Steve French]

I typically build cifs.ko for testing using the latest Ubuntu mainline
build - but building a module in the 5.10-rc1 kernel - while booted to
the 5.10-rc1 ubuntu mainlinekerel - e.g. "make C=1 -C
/usr/src/linux-headers-`uname -r` M=`pwd` modules
CF=-D__CHECK_ENDIAN__"
which has worked for years - no longer works.

make: Entering directory '/usr/src/linux-headers-5.10.0-051000rc1-generic'
make[2]: *** No rule to make target 'scripts/module.lds', needed by
'/home/smfrench/cifs-2.6/fs/cifs/cifs.ko'.  Stop.
make[1]: *** [scripts/Makefile.modpost:117: __modpost] Error 2
make: *** [Makefile:1703: modules] Error 2
make: Leaving directory '/usr/src/linux-headers-5.10.0-051000rc1-generic'

I don't see a file in scripts/module.lds in
/usr/src/linux-headers-5.10.0-051000rc1-generic/scripts directory

copying from scripts/module.lds in the 5.10-rc1 git tree to
/usr/src/linux-headers-5.10.0-051000rc1-generic/scripts fixed the
problem but was wondering if this is just a packaging problem with
Ubuntu (missing a file in the kernel headers package for their
mainline daily builds?)

-- 
Thanks,

Steve